diff --git a/app/soapbox/locales/is.json b/app/soapbox/locales/is.json
index 50690fbbe..6f50cbbe7 100644
--- a/app/soapbox/locales/is.json
+++ b/app/soapbox/locales/is.json
@@ -853,12 +853,13 @@
   "registrations.create_account": "Create an account",
   "registrations.error": "Failed to register your account.",
   "registrations.get_started": "Let's get started!",
-  "registrations.password.label": "Password",
-  "registrations.success": "Welcome to {siteTitle}!",
+  "registrations.password.label": "Lykilorð",
+  "registrations.success": "Velkomin(n) á {siteTitle}!",
   "registrations.tagline": "Social Media Without Discrimination",
-  "registrations.unprocessable_entity": "This username has already been taken.",
-  "registrations.username.hint": "May only contain A-Z, 0-9, and underscores",
-  "registrations.username.label": "Your username",
+  "registrations.unprocessable_entity": "Þetta notendanafn hefur þegar verið tekið.",
+  "registrations.username.hint": "Má aðeins innihalda A-Z, 0-9, og undirstrik",
+  "registrations.username.label": "Notandanafnið þitt",
+  "reject.success": "Hafnað",
   "relative_time.days": "{number}d",
   "relative_time.hours": "{number}klst",
   "relative_time.just_now": "núna",